JDR Vol.14 No.4 pp. 592-603
doi: 10.20965/jdr.2019.p0592


Feasibility Study on a Multi-Channeled Seismometer System with Phase-Shifted Optical Interferometry for Volcanological Observations

Tomoki Tsutsui*,†, Yoshiharu Hirayama**, Toshiharu Ikeda**, Keiji Takeuchi**, and Hiroshi Ando**

*Sakurajima Volcano Research Center (SVRC), Disaster Prevention Research Institute (DPRI), Kyoto University
1722-19 Sakurajimayokoyama-cho, Kagoshima 891-1419, Japan

Corresponding author

**Hakusan Corporation, Tokyo, Japan

November 29, 2018
April 8, 2019
June 1, 2019
volcano observation device, seismometer, optical engineering, early warning system

A new Phase-Shifted Optical Interferometry seismometer system was tested in terms of its feasibility for multi-channeled volcanological observations in two volcanos in Japan. The system is capable of both sensing ground motions and transferring its signals through optical means. The prototype of this system comprises three optical-wired stations and optical components, and was deployed in Sakurajima Volcano in 2016 and in Asama Volcano in 2017. The system successfully operated for 134 days in total and provided seismograms that are in good agreement with those obtained using conventional systems. Several obstacles for putting this system to practical use that need to be solved were found through tests. Their solutions will be explored in subsequent research.

Cite this article as:
Tomoki Tsutsui, Yoshiharu Hirayama, Toshiharu Ikeda, Keiji Takeuchi, and Hiroshi Ando, “Feasibility Study on a Multi-Channeled Seismometer System with Phase-Shifted Optical Interferometry for Volcanological Observations,” J. Disaster Res., Vol.14, No.4, pp. 592-603, 2019.
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